1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604eeae844da9395930a80a13c3969925d9643571bed3d0a910e216e23f33ab7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f075155f-e274-4d12-9b94-33bb36f3b2b6.json and https://artists.proofprofile.net/proofs/artist/f075155f-e274-4d12-9b94-33bb36f3b2b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fe33df968419e80d951a03459bf49a2e310ca0960e35362dfdafff60628f39. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2070291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d72fac1b9e0d30bcd93605a1ecee7d88e79c404ee5078f9a7d5314490200639. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2070292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76012a6830a3d17623c130a9b9404fe6af21aefd6f6f13100ad01b5c00604f4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2070293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8843dac3282e803c9b0ae3ad7e0dca3c215b58063d827e6933492a20ec611192. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82142152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31bbe12589f45f06e3306f0f7d948af62f85846a69782b24b67c30469341363. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:20:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2162684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061847831ed44e387b54febcb1bd51a83bc0fc4f1874ef1c024fd53988999e96. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWZ2290327.
Murder the Government (Anniversary Special)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229038394c94a3939c70680f86a30d08f93198029cb3dd2f27fd4fe44475d2a1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ32261146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780ba6f34a1b0ee765b86df256bf214d766f122829ce68482d348f61f2fe6840. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2339940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c35631512509fd243eed651994898e739125328cbee478203f9c05add9c27a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62392888.
Submit with Silence (Death of Free Speech)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9b45bec1605e85e46dbd2af917ddf7fc56200eaec6e997c1f406a6071e9ce8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFK2312039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94922b264a19e267f6287b7100ae45f4e04a166bbcace18a95d313850c79fb55. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82468481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b71c2442fc8bc1e60e0495615c33006316fccba0e7568390827237b5dd5eea. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82468482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b71c2442fc8bc1e60e0495615c33006316fccba0e7568390827237b5dd5eea. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82468482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94922b264a19e267f6287b7100ae45f4e04a166bbcace18a95d313850c79fb55. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:00:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82468481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9b45bec1605e85e46dbd2af917ddf7fc56200eaec6e997c1f406a6071e9ce8. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFK2312039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d372b29d7c0821bb975705b5dc19aaee42e9881a8134d8a57151aaf9e13265. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2358148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4626edbc86bf44a8418bb43661463cb460e1a85861aa705a34822e6059e8981. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2478274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13db201b0df6b6016de8514c511d1b0a18670123a10fe0725eddc0d45c4ea47. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82201461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9cb35e9cf0d8992d40ef26221ac122a3bda6bdff40361c825974dc533d4fa6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2478275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa493d5221237ceb5deef7fcaca78cfbbbfd522c69b876cdf7123e4249cb0e7da. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2478276.